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Rate data often follow a lognormal distribution. Average power usage (dB per hour) for a particular company is studied and is known to have a lognormal distribution with parameters μ = 4 and σ = 2. What is the probability that the company uses more than 270 dB during any particular hour?
the diameter of a brand of ping-pong ball is approximately normally distributed with a mean of 1.30 inches and a
part asuppose that someone claims that adult koalas eat an average of 392 grams of eucalyptus leaves per day. using
45 percent households say they would feel secure if they had $50,000 in savings. you randemly select 8 households and ask them if they would feel secure if they had $50000in savings
question sadistic tendenciesyou are captured by a russian spy and tortured for information. every time you fail to
you work for the bc lottery corp. your boss asks you for an estimate of the percent of british columbians who have
You and 100 of your 200 respondents concerned about nutrition. Is this reason to believe that the percent in your area is higher than the national 40%?
How many of the installations at the Maumee branch would you expect to take more than 30 minutes? What is the likelihood that fewer than eight installations took more than minutes?
They plan to set up a radar trap and check the speeds of 80 randomly selected cars. Can this distribution be approximated by a normal curve?
Write the claim as a mathematical sentence. Stating the null and alternative hypotheses, and identify which represents the claim.
The variance of some data is 37.33 what is the standard deviation?
Consider a high school basketball player that is a 70% free throw shooter. During the season, what is the probability that this player makes the third free throw in five shots (exactly 3 shots in 5 attempts)?
A random sample of 50 students from this school was selected, and the mean math SAT score was 530. Is the high school justified in its claim? Explain.
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